The SimpleLink™ CC2640R2F Wireless MCU contains an Arm^® Cortex^®-M3 (CM3) 32-bit CPU, which runs the application and the higher layers of the protocol stack.

The CM3 processor provides a high-performance, low-cost platform that meets the system requirements of minimal memory implementation, and low-power consumption, while delivering outstanding computational performance and exceptional system response to interrupts.

Arm^® Cortex^®-M3 features include:

• 32-bit Arm^® Cortex^®-M3 architecture optimized for small-footprint embedded applications
• Outstanding processing performance combined with fast interrupt handling
• Arm^®Thumb®-2 mixed 16- and 32-bit instruction set delivers the high performance expected of a 32-bit Arm^® core in a compact memory size usually associated with 8- and 16-bit devices, typically in the range of a few kilobytes of memory for microcontroller-class applications:
  • Single-cycle multiply instruction and hardware divide
  • Atomic bit manipulation (bit-banding), delivering maximum memory use and streamlined peripheral control
  • Unaligned data access, enabling data to be efficiently packed into memory
• Fast code execution permits slower processor clock or increases sleep mode time
• Harvard architecture characterized by separate buses for instruction and data
• Efficient processor core, system, and memories
• Hardware division and fast digital-signal-processing oriented multiply accumulate
• Saturating arithmetic for signal processing
• Deterministic, high-performance interrupt handling for time-critical applications
• Enhanced system debug with extensive breakpoint and trace capabilities
• Serial wire trace reduces the number of pins required for debugging and tracing
• Migration from the ARM7™ processor family for better performance and power efficiency
• Optimized for single-cycle flash memory use
• Ultra-low-power consumption with integrated sleep modes
• 1.25 DMIPS per MHz